\footnotesize Notes on Graphs in Figure 4: The distribution of each variable is shown on the diagonal. On the bottom of the diagonal: the bivariate scatter plots with a fitted line are displayed. On the top of the diagonal: the value of the correlation plus the significance level as stars. Each significance level is associated to a symbol: p-values (0, 0.001, 0.01, 0.05, 0.1, 1) <=> symbols ("***", "**", "*", ".", " ")

\end{figure}

The output of this code comes like as shown in the image . Can any of you please guide me how to fix this problem please? I will be grateful for any suggestions on it. Thanks